BIDIRECTIONAL ELECTRONIC BLACKBOARD CAPABLE OF LIGHTING A SOFT KEY PANEL BY ATTACHING AN ELECTROLUMINESCENCE SHEET TO A NARROW SPACE BETWEEN COVER GLASSES

摘要

PURPOSE: A bidirectional electronic blackboard equipped with an energy-saving function and a soft key function is provided to reduce power consumption and heat generation and to improve durability.;CONSTITUTION: A bidirectional electronic blackboard comprises an LCD panel(140), a cover glass(160), and a soft key panel. The cover glass is attached to the front side of the LCD panel. The soft key panel comprises an icon member, an EL(Electro Luminescence) sheet, and an EL controller. The icon member is attached to the cover glass which is located in a domain which does not emit light among the LED panel. The EL sheet is inserted into an empty space between the cover glass and the LCD panel and is attached to the rear side of the cover glass. The EL controller receives a coordinate value from a center sensor controller and lights the EL sheet corresponding to the coordinate value or blocks the EL sheet.;COPYRIGHT KIPO 2012